DS28EL25Q+T

The DS28EL25Q+T is a part of Maxim Integrated's line-up of 1-Wire secure memory devices. It is designed to provide cryptographic authentication and secure storage, making it suitable for applications requiring data protection, such as anti-counterfeiting and secure feature control. The device features 2.5KB of EEPROM, which can be used to store user data, keys, or other sensitive information securely.
Key features include:
1. 1-Wire Interface: Facilitates communication with the host using only one data line and ground, simplifying connections.
2. Secure Authentication: Utilizes asymmetric cryptography for strong security measures.
3. EEPROM Storage: Offers 2.5KB of storage with configurable protection modes.
4. Unique Serial Number: Each device has a unique 64-bit ROM serial number ensuring unique identification.
5. Low Power Consumption: Ideal for battery-powered applications.
This compact and secure device is typically used in consumer electronics, medical devices, and other industrial applications where data authenticity and integrity are critical.

The DS28EL25Q+T chip is a 1-Wire ECDSA secure authenticator from Maxim Integrated. Equivalent products may include similar secure authentication chips with ECDSA support, such as the ATECC608A from Microchip Technology or the STSAFE-A100 from STMicroelectronics. These alternatives provide cryptographic authentication features, though specific functionality and specifications should be compared to ensure compatibility with your application.

The DS28EL25Q+T is a 1-Wire EEPROM device from Maxim Integrated, featuring 2Kb (256 bytes) of memory. It offers SHA-256 authentication to ensure secure communication and data integrity. This device includes a unique and unalterable 64-bit ROM ID for device identification and authentication. The memory is organized in a way that allows for flexible data storage and retrieval, with specific pages being selectively locked as read-only to enhance data protection.
For secure operations, the device supports a challenge-and-response protocol using SHA-256, providing robust protection against unauthorized access and data modification. The DS28EL25Q+T operates over a 2.8V to 5.25V supply range, making it versatile for various applications. It communicates over Maxim's 1-Wire bus, which simplifies connectivity by using a single data line and ground, reducing the amount of wiring needed.
This IC is commonly used in applications requiring secure storage and authentication, such as in access control systems, secure peripheral authentication, and certain IoT applications. The DS28EL25Q+T is available in a compact 6-pin TDFN package, ideal for space-constrained projects.

The DS28EL25Q+T is a 1-Wire EEPROM device used for secure storage and authentication applications. It typically comes in a compact 6-pin TDFN (Thin Dual Flat No-Lead) package. The pin functions are as follows:
1. GND: Ground connection.
2. 1-Wire (DQ): Data input/output for the 1-Wire communication interface, used for both power and data.
3. VCC: External power supply connection (optional, as it can be powered through the 1-Wire interface).
4. NC: No connection.
5. NC: No connection.
6. NC: No connection.
The primary function of the DS28EL25Q+T is to provide a secure storage solution with 1 Kbit of EEPROM memory, SHA-256 authentication, and a unique 64-bit ROM ID for device identification. This makes it suitable for use in systems requiring secure data exchange and device authentication.

The DS28EL25Q+T is manufactured by Analog Devices, Inc. This company specializes in the design and manufacturing of analog, mixed-signal, and digital signal processing integrated circuits used in electronic equipment. Analog Devices is known for producing components that serve a variety of industries, including consumer electronics, communications, healthcare, automotive, and industrial equipment.

The DS28EL25Q+T is typically used in applications requiring secure authentication and data communication. Its primary application areas include:
1. Secure Access and Authentication: Utilized in systems that necessitate secure user or device authentication, such as access control systems.
2. Asset Management: Employed in tracking and managing high-value or sensitive assets, ensuring their integrity and authenticity.
3. IoT Devices: Provides secure identification and communication for Internet of Things (IoT) devices.
4. Supply Chain Security: Used in verifying the authenticity of components or products across a supply chain.
5. Medical Devices: Ensures secure data exchange and functionality in medical equipment.
These applications leverage its secure communication and cryptographic capabilities.

The DS28EL25Q+T is packaged in a 6-pin TDFN (Thin Dual Flat No-Lead) package.